class Person{
   public int a;
    int b;

    public Person(int a, int b) {
        this.a = a;
        this.b = b;
    }
}
class Stu extends Person{
    public Stu(int a, int b) {
        super(a, b);
    }

}
public class Test {
    public static void main(String[] args) {
        Stu stu=new Stu(2,3);
        System.out.println(stu.a);
    }

}
